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  <script>
    var data =[{
      id:1,
      name:'家电',
      goods:[{
        id:11,
        gname:'冰箱',
        goods:[{
          id:'111',
          ganme:'海尔'
        },{
          id:'112',
          gname:'美的'
        }]
      },{
        id:12,
        gname:'洗衣机'
      }]
    },{
      id:2,
      name:'服饰'
    }];
    //我们想要输入id号，就可以返回的数据对象
    //1.利用 forEach 去遍历里面的每一个对象
    function getID(json,id){
      var o = {};
      json.forEach(function(item){
        //console.log(item); //2个数组元素
        if(item.id == id){
          //console.log(item);
          o = item;
          return item;
          //2.我们想要得到里层的数据 11 12 可以利用递归函数
          //里面应该有goods这个数组并且数组的长度不为 0
        }else if(item.goods && item.goods.length > 0){
          o = getID(item.goods,id);
        }
      });
      return o;
    }
    console.log(getID(data,1));
    console.log(getID(data,2));
    console.log(getID(data,11));
    console.log(getID(data,12));
    console.log(getID(data,111));
  </script>
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